I have been working with a AT32UC3A1512's ADC but since my analog is in some instances very low voltage and some instances quite high, a 1.6V was added to it before sending to the ADC. The problem now is that it is some times still difficult to detect this low voltage at some instances.
I would love to have a automatic gain control on the low signals before digitizing but looks like the AT32UC3A1512 does not have an inbuilt variable gain like the ATMEGA16/32 does. Can anyone confirm this?
On the other hand, kindly suggest a variable gain chip that I may use for this purpose.